TPITuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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Well, with a 383 and TPI you're probably not going to hit peak HP in the 5000+rpm range unless you do some serious massage work to good aftermarket TPI parts...
I stuck with a 355, and with the mods in my sig I'm sitting right around 400hp to the crank, depending on how much you figure in for drivetrain loss (305rwhp and it runs mid 12s)
__________________ 1988 Trans Am 355. 33,000 original miles.
355ci 10:1, Holley 750DP, Summit Stage 2 intake, AFR 180cc Street Eliminators, Comp Cams XR282 HR10, MAC shorties, Mufflex 4" exhaust, Circle D 3500 stall
Best ET: 12.26@108.44, 1.67 60ft
Best MPH: 12.57@112.5, 2.0 60ft
Well, with a 383 and TPI you're probably not going to hit peak HP in the 5000+rpm range unless you do some serious massage work to good aftermarket TPI parts...
I stuck with a 355, and with the mods in my sig I'm sitting right around 400hp to the crank, depending on how much you figure in for drivetrain loss (305rwhp and it runs mid 12s)
I know this question is highly innapropriate but what kinda mileage do you get with a setup like that?
thomas1976, are you looking for 400 rear wheel hp, or 400 flywheel hp?
Used to be people usually meant 400 engine hp, now most speak of power to the wheels.
It doesn't take a 383 to get 400 flywheel hp.
Check my sig, that combo made 320 to the wheels. Figuring 20% drivetrain loss, it's a 400 hp motor. Daily driver with cold air conditioning. Gas milage is just over 14 mpg around town, with a heavy right foot.
Bill
Gunner823 and Burnout91, great imput thanks. Is it possible to keep EGR with your AFR’s ?
Quote:
Originally Posted by Gunner823
with a 383 and TPI you're probably not going to hit peak HP in the 5000+rpm range unless you do some serious massage work to good aftermarket TPI parts...
Yes sorry I did not write that one correctly, was intendet to keep it under 5500rpm.
Quote:
Originally Posted by Burnout91
thomas1976, are you looking for 400 rear wheel hp, or 400 flywheel hp?
400 fwhp. Thats already a big challenge for our little local car club
Quote:
Originally Posted by Timothayyy
I thought EBL was only for TBI?
Or are you switching it from TPI to TBI?
The point is to keep it TPI, old fashion folks that like it the way it was except stock performance
We already installed EBL flash and it worked great, took like 2 hours of repinning, first time. Specific intructions are include with the TPI package.
Unfortunately we dident get the chance to tune alot because the tranmission died recently.
Quote:
Originally Posted by Fast355
.
Fast, U dont happen to come skiing in the Swiss mountains this wither?
I know this question is highly innapropriate but what kinda mileage do you get with a setup like that?
Honestly, I have no freakin idea...I don't drive the car enough to keep track If I were to make a very big guess, I'd say between 10-13 around town and 14-15 on the highway. Maybe a bit more if I keep it under 65mph to keep the RPMs down.
To the topic creator...I ditched my EGR, so I'm not sure if it will work with the AFR heads. Probably will, though.
__________________ 1988 Trans Am 355. 33,000 original miles.
355ci 10:1, Holley 750DP, Summit Stage 2 intake, AFR 180cc Street Eliminators, Comp Cams XR282 HR10, MAC shorties, Mufflex 4" exhaust, Circle D 3500 stall
Best ET: 12.26@108.44, 1.67 60ft
Best MPH: 12.57@112.5, 2.0 60ft
